Multi TAG filtering on tickets grid concist to logical operator OR

Add multi TAG filtering on tickets grid with logical operator AND to be able to filter all tickets which have all selected TAGS only

Example : push SHIFT + clicking for OR

                   push Dedicated touch + clicking for AND (and color the selected TAGS in black to cleary display that it's a AND)

If it's not possible to inject this AND in the URL query, I suggest to use the &tagString=TAG1....TAG2.... (as already developped in Advanced search)